A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo et al., 97: a new tool for crystal structure determination and refinement, Journal of Applied Crystallography, vol.32, issue.1, pp.115-119, 1999.
DOI : 10.1107/S0021889898007717

D. J. Conrado, H. Verli, G. Neves, C. A. Fraga, E. J. Barreiro et al., -phenylpiperazine antipsychotic prototype, Journal of Pharmacy and Pharmacology, vol.455, issue.Suppl. 4, pp.699-707, 2008.
DOI : 10.1211/jpp.60.6.0004

D. Cremer and J. A. Pople, General definition of ring puckering coordinates, Journal of the American Chemical Society, vol.97, issue.6, pp.1354-1358, 1975.
DOI : 10.1021/ja00839a011

L. J. Farrugia, : an update, Journal of Applied Crystallography, vol.45, issue.4, pp.849-854, 2012.
DOI : 10.1107/S0021889812029111

S. Gatfaoui, M. Rzaigui, and H. Marouani, Acta Cryst, p.198, 2014.

H. Marouani, N. Raouafi, S. Toumi-akriche, S. S. Al-deyab, and M. Rzaigui, Synthesis, Crystal Structure and Computational Studies of 1-Phenylpiperazin-1,4-Diium Nitrate Monohydrate, E-Journal of Chemistry, vol.9, issue.2, pp.772-779, 2012.
DOI : 10.1155/2012/826348

G. M. Sheldrick, Acta Cryst, pp.112-122, 2008.